Cisco Systems BC-145 manual Cisco’s Trisl Implementation, ISL and Trisl

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Configuring Token Ring Inter-Switch Link

This chapter explains how to configure Token Ring Inter-Switch Link (TRISL) on Cisco routers. The chapter describes TRISL in the context of the Inter-Switch Link (ISL) protocol and the Token Ring VLAN concept.

For a complete description of the Token Ring Inter-Switch Link commands in this chapter, refer to the “Token Ring Inter-Switch Link Commands” chapter in the Cisco IOS Bridging and IBM Networking Command Reference (Volume 1 of 2). To locate documentation of other commands that appear in this chapter, use the command reference master index or search online. For information on how Token Ring VLANs are implemented on switches, refer to the Catalyst Token Ring Switching Implementation Guide, the Catalyst 5000 Series Token Ring Configuration Notes, the Catalyst 3900 Token Ring Switching User Guide, and the Catalyst 3920 Token Ring Switching User Guide.

This chapter contains the following sections:

Technology Overview, page 145

TRISL Configuration Task List, page 148

Monitoring TRISL Statistics, page 153

TRISL Configuration Examples, page 154

To identify the hardware platform or software image information associated with a feature, use the Feature Navigator on Cisco.com to search for information about the feature or refer to the software release notes for a specific release. For more information, see the “Identifying Platform Support for Cisco IOS Software Features” section on page li in the “Using Cisco IOS Software” chapter.

Technology Overview

Cisco’s TRISL Implementation

This section contains information related to Cisco’s implementation of TRISL that you should understand before you proceed to the “TRISL Configuration Task List” section on page 148.

ISL and TRISL

ISL is a Layer 2 protocol that enables switches and routers to transport Ethernet frames from multiple VLANs across Fast Ethernet or Gigabit Ethernet links. Cisco’s TRISL protocol extends the ISL model to include the transport of Token Ring frames from multiple VLANs across these same links.

 

 

Cisco IOS Bridging and IBM Networking Configuration Guide

 

 

 

 

 

 

 

78-11737-02

 

 

BC-145

 

 

 

 

 

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Contents ISL and Trisl Cisco’s Trisl ImplementationBC-145 BC-146 BC-147 Token Ring VLANsBC-148 Configuring IP Routing over TrislBC-149 Configuring Hot Standby Router Protocol over TrislBC-150 Configuring IPX Routing over TrislConfiguring Source-Route Transparent Bridging over Trisl Configuring Source-Route Bridging over TrislBC-151 BC-152 Configuring Source-Route Translational Bridging over TrislBC-153 Monitoring Trisl StatisticsBC-154 Trisl Configuration ExamplesBC-155 Following is the configuration for the router5500 BC-156BC-157 BC-158 IP Routing Source-Routed Frames Between Trisl VLANs ExampleEncapsulation tr-isl trbrf 999 bridge-num BC-159BC-160 BC-161 BC-162 IPX Routing Source-Routed Frames Between Trisl VLANs ExampleBC-163 SRB Between Token Ring and Trisl Vlan ExampleBC-164 SRB Between Trisl VLANs ExampleBC-165 Transparent Bridging Between Token Ring and Trisl Vlan BC-166SR/TLB Between a Trisl Vlan and an Ethernet Interface BC-167Set vlan 999 type trbrf bridge 0xe stp ibm BC-168BC-169 Trisl with Fast EtherChannel ExampleBC-170